[]unity导出插件报错

laya.d3.js:21857 Uncaught TypeError: Cannot read property 'length' of null
at Animator.__proto._getAvatarOwnersByClip (laya.d3.js:21857)
at Animator.__proto._getAvatarOwnersByClipAsync (laya.d3.js:21944)
at Animator.__proto.addClip (laya.d3.js:22458)
at Sprite3D.__proto._parseCustomComponent (laya.d3.js:27313)
at Function.Utils3D._createNodeByJson (laya.d3.js:15937)
at Function.Utils3D._createNodeByJson (laya.d3.js:15945)
at Sprite3D.__proto.onAsynLoaded (laya.d3.js:27847)
at ResInfo.onLoaded (laya.core.js:13560)
at EventHandler.__proto.runWith (laya.core.js:1170)
at ResInfo.__proto.event (laya.core.js:943)